Measurement of the diameter of a laser beam |
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| Authors: | C Courtney W M Steen |
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| Institution: | (1) Department of Metallurgy and Materials Science, Imperial College of Science and Technology, Prince Consort Road, SW7 2BP London, England |
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| Abstract: | A new and simple technique for measuring the effective diameter of a laser beam used in material processing is described.
The time for the temperature of a spot heated by the laser beam to rise to 90% of equilibrium is compared with that predicted
theoretically for a Gaussian TEM00 laser beam. A Gaussian beam diameter equivalent is thus deduced. This calculated diameter is of particular relevance to applications
where the laser is used as a heat source. |
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| Keywords: | 42 55 |
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